B. What was the condition of tanahun district in the past? Compare that with
the present condition.
Why is development necessary

In the past, it was hard for many farmers to access irrigation systems and this contributed to their low economic status. Today there is more community organized irrigation and this has improved conditions for many farmers and given them access to more resources.

Explanation:

Tanahun district is located in Nepal there are a lot of rural villages and agriculture that is important to the livelihoods of the people living in Tanahun. Irrigation is one of the most important development topics in this district.  In the past, irrigation was carried out independently by different farmers and local influencers.  In the 1950s, they began to form water users' associations (kulo samiti) and these were more democratic than the Ranas that existed in the past.  Farmer Managed Irrigation Systems were increasingly common to help make water acquisition, allocation, and distribution more accessible and the resource mobilization more efficient. Now today there are community-managed irrigation system that assures the development is sustainable and benefits whole communities instead of just certain individuals.

the arab empire adopted the muslim religion as their main belief. arabs would influence the people from the territories they invaded towards islam (the muslim belief).

nevertheless, throughout the history of the arab empire, rulers brought intellectual individuals from other religions to their centers of learning. these other foreigners included jews, christians, greeks, persians, and indians.   these resulted in the adoption of important knowledge developed by these cultures by the arabic empire. for example, the works of aristotle were translated from greek to arab and indian scientists brought the numerical concept of "zero" to the arabs.

nowadays, 93% of the arab population is muslim, which at the same time is subdivided in sects including the sunni, zaini, alawi, shia. the remaining 7% is composed mainly of christians.

i think it is the third one.